Gas-engine.



C M.l LEEUH. GAS ENGINE. APPLIOATIOR-PLEDIAY 1, 1909.

Patented Oct. 25, 1910.

4 SHEETB-B'HEETI.

llruey` G..M. LBEGH. GAS ENGINE. n'rmon'lon uns nu 1. isos.

Patented oct. 25,1910` 4 SHEETS-SHEET 8.

ENTOR l {blme} 1 WHA/5,5555

'0. M. LBEGH.

GAS ENGINE.

APPLICATION FILED HAY 1, IQO.

Patnted Oct. 2,5, 19,10.

4 annnTs-snn'r 4.

STATES PATENT OFFICE;A

CHARLES M. LEECH, 'OF LIMA, OHIO.

G'AsmifrelNE.

To all whom 'it concern:

Be it known that I, CHARLES M.- Lnacin' citizenof the .United States, residing at Lima, in the countyV of Allen and State of Ohio, have invented certain new and useful Improvements in Gas -j Engines, the following is'ja specification.

Myinvention relates to lgas engines' of that class described and claimed in my -Patent Number 914,292, embodying self-contained cylinder, and piston oiling and coolr of which 'ing means, the latter of which is comprisedof a-novel circulation of air and actuates the former.

My presentA invention aims to provide an -improvement in the air circulation, whereby' the c linder and'piston may be uniformly coole and the resulting warmed air em? lployed to operate the oil and fuel feeds. Myinventon furtherjaims to provide a 'simplified structure, which will not therefore become often out of order, and which emb'odiesa novel and useful throttle valve.

Further objects and 4advantages of my invent-ion will appear in the course of the fol- 'v lowingdescriptionbf the construction and 7 is a side elevation of the throttle valve,A

voperation thereof; in which reference is .made to the accompanlying drawings, form.

i a part of this speci cation, and in which,

` igure 1 `is alcentral vertical sectional view through my improvederigine, the .form of which is similar to that shown in my patent above referred t. Fig. 2 is a partial side elevation and partial verticalV section thereof, looking at. right angles to Fig.' 1. Fi .3 is acont-ral vertical sectionalview of a s ortened embodiment of my invention, in i which the" lower guide, shown in Fig. 1, is done awa with, the operation however, remaining t e same. Fig. 4 is aside elevation thereof. Fig. 5 is a similar view to`Fi`g. 3,.

illustrating aslightly modified form. F g. 6 is a plan'view of the piston, removed. Fig.

and, Fig.;8 is across s ection'takenv there'- througli. Fig. 9 is a side elevation of the form of v'engine shown in Fig. 1. Fig. 1Q is a detail view, partly in' section,showing the cam and connecting rod. l Y

Like numerals are used to designate like parts throughout the several figures, masi much as theforms are so nearly alike.l

."lyimproved engine comprises a casing '55 19 hiving n enlarged lower'portion 2, forming the compression chamber, anda reduced `upper portion '3, forming the explosion Specification of Letters Patent. i i Application led lay 1, 1909. Serial No. 493,298. j

Patented out. 25, 1910.

edges. of the fins 4, the lower'circnlar edgeof said I.picket-resting upon a circular shoul' der 8 lgs. 2 andai) formed upon the'-'outer surface o asing 1. The jacket 7 is formed provided with radial vertical 4, for 'fain its top with'an opening 10, surrounding the 'boss- 5 and affording an air admission port.l

The crank 'circular casting 13, which has flangesv 14,

case 12 is formed'by a semi-.v

extending upon a supportingbase l5. `r The crank case, forms an oil hambenand may be drained .by means o a drain-pipe .16

casting 13.- According tothe f orm shown 'in Fig. 1, similar to the form yshown in my patent, a casing 17, of semi-circular shape,

leading from the lower central point ofA `is secured upon casting 137 Aand forms a'f ypart of the crank case, and supports etlie ower "hanged edge 18 of casing 1, by its circular flan cylinder 20. t ereo'f, while according to the form shown in Figs. 3 and 5, the lower edge of the casing 1, is secured directly upon the casting 13, 'thus doing away' with castiiig 17, and reducing the length of theengine.

' In Fig. 1, crank-casecastings v13 and`17,

and in' 3 and-5, casting 13 and the llower edge of ca sin 1, are provided in their abutting face with recessesto form bearings 21 for t e power shaft 22 having its crank 23 within the case 12.

The 'piston comprises a hollow cylindrical .body 24, of a relative size to fit within the explosion chamber 3, and has a circular 19,l surrounding `the centrall flange 25,"forming a Ipiston and located .Within the compression chamber 2. Piston 24 and its Harige 25 are also providedA with suitable packing" rings 26, and said piston 24' has a head 27, which' receives the pact of the exploded charge within the exp'losion chamber 3, and isfurther provided y y.

with a transverse pin 28 to'which the inner end of itman 29 is foupled, tlie outer iend of whic pitman iscoup ed upon the crankV 423 of sha 22 Y. 4

According tothe form shown in Figs.' .i1

and prvidingva. port 44 controlled by a and 2, the iston 24 'n nds some distance valve 45, opening from compression cham beyond 'its an 25, which extendin 'porber-ZI-above piston 25, into the wall cham, vtion30 slides within the centralcyli r2() lH9133. l of crank case casting 17. In this form'also In each of -the forms of my invention 70 1 has diametrically opposing 'inlet I. and .exhaust ports 31 and 3 2, respectively,

throu h' its wall into explosion chamber 3,' which inlet opening- 31 coin-A shown, oil pipes 46 and .46 are-verticall . ular ends of each ofsaid pipes '46 vand 46 and diametrically arranged upon op; posite sides of said-casting 1, the upper an#v municates. 'with -a vertical channel. 33,- ing 'screw-threadedlinto the upperpor- 15 thro h the 'casing wall, extending up tion of said'eompression chamber 2, as at wa y from a circular chamber 34.31;. the 47, nea'rshould'er Sand belowexhaustipe l l 'base thereof, below piston 25 to 'which a port 35 leads. 5 The'casing shoulder, between exand .compression chambers 3 and 2 'as-openings 36 communicating between the com 'ression chamber 2 above piston 25, and the acket 7. A vertical pi 37 located diametrically opposite to wa channel 33, has an upper angularv end 38`leadiiig through and communicating Within jacket 7, and is also provided iivithjconnections 391nd 40,

vcommunicat respectively with the-coinpression chain r- 34. be1ow.'piston 25`- and the vcrank case 12, and 'provided lrespectively with valves41 and 42. The chamber 34 be'- low piston 2 5 has an outlet 43 diametrica.llyl opposite its connection 39 with pipe 137;'.

Thus upon the up-stroke of piston .2 4-,{fair is sucked downwardly through .jacket 7,- and ipe37, and through valve T`41into (,:hain r 34 below piston 25 and` also into crank -case 12 through 40 and 42 while uponthe down-.stroke thereof, suche-'air is com` pressed and forced .through channel 33-and outlet 43, and the lair in crank case- 12', previously drawn therein through valve 442, is

compressed and expelled through parts to be 'hereinafter' described.' .lt'willthus be seen '38. Thelower extended-portion 46 o the combustion chamber 3f is provided with stood thatfpfipe 46v communicates with the after to -be described.

f The lower ends of pipes 46 and 46 comtion with and deliver oil into 'crank-'case .12; Upon the upward stroke of pistonA 24,. airzlis scribed, and upon the. descent of said piston,

openings 46b in alinement with'the open end u of said pipes 46' and 46. It. is tobe undercompressionchamber 2 in 'exact-ly the' saine v -manner'as-pipc.'46?,and therefore I have*L ssi oil istlien distributed insn-ymanner herein- I Amunicate with the central lcylinder 20.A of; casting 17, near the lower end thereof. It is' .to beunderstood thatthe-lower 'end of s a'id" ypipes 46 and 46, except'wlien piston 24 is-.in

its lowerinost position asv shown. in Fig; 1,: are uncovered, and free to have communicaf` .drawn into' crank case ,12, as before dc-4v `a portion of the compressed' air is forced upwardly through pipes 46-and 46. The 0il- 'droppinggfroi'nj oil can 47 intofpipe. 46 is sprayed throiighzopening 46b upon. piston' 24;.

'40 that'theexplosion chamberand iston 24' will be thoroughly and uniform y-rcooled,

the latter b the air drawn into the'` crank case 12,':in that, after circulation, the .re'

, sultant warmed .air is collectedwithin and' --45 expelled fromchamber34. 1

'Th -form shown in F'gs. 3 and 4, and the It .is obvious'thst' a'portion of ithe' oil yr'i.ll," 10`5'- gravit-ate downwardly' through pipe .46,-- when the pressure is reduced therein by the f y upward-stroke of the piston 24,.;-and that`-. vsaid o il will,-be'distribiited upon the lower portion. ofthe cylinderportion 20 of cast- 110 ing-17` for lubricatin 'the' same, and a poroperation thereof, is very similar to that de-v scribed, with 'the exception of the fact, as

before stated, that the vlower edgeof ,casing 1 rests directly upon the crank case casting 13, and doin away with the piston extenjsion 30, and t e chamber 34 below 'piston'25.-

The air pipe 37 in this form, has its valved connections 39 and 40 communicating-ret-ively with compression .chamber 2 a ve piston 25, and'with crank case 12 be' .low saidpiston. Openings 36 through the casing shoulder, are thus dispensed with, air being taken in from jacket 7 throu h- 39,

o and through 40to crank case from w ere it `isdischargedi'iitochaiinel 33 and outlet 43.

The formvshown in Fig. 5, is also similar to the `forms just-described, especially Fi 3j and 4,--from which it diers only by t 4e closing of the lower end of wall channel 33.z

case I2. The lower end of pit-man 29` and crank' 2 3A lubricate themselves by passing through the oil collected in'- crank case 12 and also splsh the same upon the cylinder 20.' 4The oil splashed into pipes-4-6 andl 46, to ether with the air in crank-case 12 which wi 'lbe laden with small particles of oil, is forced upwardly through-said pipes 46 and 46 and'iii pipe 46 is sprayed against lcylinder 24 throii'gh'opening 46, while in pipe 46. itis vmixed with the oil dropping from can 471.a nd then sprayed against pistonj24 as above described.. 'A y i In accordance with .my resent invention, I provide a pipe 4 8 whicli .leads from one of the air and oil pipes 46, shown in Figs.

2 and 4, a'nd. in the present showing, the pipe 46 to which o'il cup 47 is connected, to t ie tion of the saine wil `be: collected in .crank exhaust pipe 49 leading from exhaust v leading vertically rt 32, said air and oil pipe 46 being provided with a check or regulating valve 5() immediately above the connection thereto of pipe 48.

Check valves may also bottom of air pipes 46 (see Fig. 2) to prevent air passing back into crank case. Thus for instance the air in chamber 2, Fig. 3 is, on the .up stroke, and 48,' and by means of-the latter, into the exhaust i e 49 to thoroughly clean out the latterofpbp viously been thrown' therein from the explosion chamber. Also inl ac cordgmcewith my resent invention, I provide a pipe 51 parallel4 alongsidecasing 1, to the upper end of whclrpipe 5l -is secured a carbureter comprising a casing 52, in .which is mounted a central fuel receptacle 53, separated into upper and lower compartments by a eensV trally aperturedweb 54, thelower compart- .ment .of which has an inlet'port 55, leading through casing -5 2, Awhich port is connecte by means (not shown); to a suitable fuel .tank containing fuel' under pressure, and is controlled by a-needle 4valve 56. The lower compartment ofreceptacle 53' contains a disk valve 57 seatedupwardly against the aperture'in web 54,-by a.spri1 1g 58,said valve havin astem 59, the lower end of which isguide in'said lower'compartment andthe upper end of which. projects through the aperture of web 54 and-.extendsupwardly into the upper compartment within the path of downward movement of a valve 6( se a'ted upwardly against the'upp'erreduced end'of receptacle 53, and having its stem` 61, project-ing upwardly through casing' .52 and controlled by a'spring 62, tendingto' hold' said valve against its seat, partment, as shown, angular vupper end or, in other words, 'sion chamber 3, by it'soutlet The upper com.- communicates with` the 31 of the wall-channel,

therewith. Thus a portion of the air which its exhaust and in et ports,

..55 I valve 60 downwardly has been compressed in the compression chamber passes upwardly through channei 33 after being. warmed by contact with piston. 24, passes upwardly through pipe 51, andas soon as the. iston descends, opening 'and reducing fessure in ex losion chamber 3, said 1n pipe 51 wi enter casing 52and press sion Vchamber. 3, through ports 64 and 31,

' carrying witht a portionof the fuel Iin thel valve 60 is opened,

uplper compartment of the fuel receptacle, W

ich is continuously supplied each time by the contactofsaid valve againstthe vupper end'oftha Astem vof valve 57, and the consequent .lowering of the latter,

Extending vertically and; upwardly from be provided at the forced through pipes 4GA urnt gases which have just pre-A from the outlet 43, and- Furthermore,

the inlet port of explo portl 64 allned.`

and enter the explo` the juncture of the explosion chamber inlet 31, carbureter outlet 64, and wall channel 33, and alined with the latter, is a scavenging pipe 65 which, at its angular extension. 66,

upper end, has an leading inwardly lthrough jacket 7 and casing l1, and commu; nicating with the upper portion of explosion chamber `3,

said pipe 65 having aback pressure check valve 67 therein, and permitting the entrance 'of air through from pipe 33 into 4the said chamber 3, as soon as exhaust port force out all burnt gases. 'It will be understood that exhaust port 32 is uncovered prior to the uncovering o'f inlet port 31. Air pipe 32 is uncovered, to thoroughly 48 assists'in discharging the -burnt gases by .delivering 'air into exhaust pi'pes 49.

Arranged within. the juncture of channel 33, pipe), and ports 31 and 64, is a throttle Valve V(38, having an 'outwardly extending shaft '(39 having a cran-k 70 upon its en(l.to establish communication between said chan.- nels and ports at the proper\time s.

It is to be understood that'valve (38 rotates'. backward and forward, just far enough to cover and uncoverepipes 65 'and 64. Valve 68 keepsY pipe-64 covered untilthe exhaust port 49 and inlet port 31 are opened, thusv reducing the pressure Ain channel 33. If the valve (3S-was not employed the airpr'essure would enter pipe 64' and force. open valve' 57 and allow the gasolene or the like to..

esca-pe, which might be very dangerous.

discharge-'air .into the combustion chamber 3 after t-he air 'in channel 33 has been introduced therein, theconstru'ctionof said valve being shown in detail in Figs. 7 and-8. This valve comprises a cylindrical body 71- having a semi-circular section cut out therefrom betherethrough.

ed through its opening 72. .The valve 68 is it is desirous to have pipe 65 105 tween itsends, andprovided with a central to cover the cut-'out portion just mentioned, 'l 'and servesas a screen for the material proj ectshownin its open position in the drawing,

from which it will be understood that, in iS closed position, covers the lower end )of the scavenging p1pe end of the carbureter port 64.

The valve 68 is partially rotated-sothatv 65 and the discharge the same may cover and 'uncover pipes .65-

and 64, by .means of a connecting to a linkv 76, which in turn is pivotally con- .rod 7 5f which has its upper end pivotally connected .1.2.0-

nectedto the crank 7Q.'The rod 7 5 is slidably mounted in brackets 7 7 which are fixed upon the casing lfand the rod `7 5 isrigidlj1 connected as at'78 to theupper' end ofv a coill spring 79, which is disposed between the 1 rod 75.- The lower endof connecting rod'- 75v with al ixedpin -8'0 upon which. mounted a'wheel 81, adaptedl -to- 1.30

fit within a cam-groove 82A, formed upon the outer side of a cam 83, which in turn is riildly mounted the shaft 22.

avingfullydescribed my invention, I

claim: l v- L'In a ga'sgengine of the character de# scribed, `the combination 'of a vcylinder' feed channel, and a removable' throttle valve vtherein comprising a solid cylindrical body i0 having a portion semi-circular in. cross-secl tion cut out therefrom betweenitsends, and [with a 'conical opening extending transversely 'therethrough `and 'i'communicatingwith the space made by the removal of said lrcut-out portion, and aA wiremesh. secured i upon Said bodyI to cover said space.

In a gas engine, 'a casing .comprising explosion compression chambers, having-different diameters, acrank case connected. to`

disposed within said vexplosion chamber and provided `with a' ianged portion-'disposed the, lower end of said casing, a4 hollow piston within the compression chamberfsaid compression chamber o enin'g downwardly'into saidfcrank case, sai Vexplosion chamber havi'ng .an inlet and outlet port, a jacket sur. vrounding' said explosion chambeigvsaid com pression' chamber and said crank case form air IV compressm tions'between .said `]acket andjsaid air com,-

ided wi th` a `n opening in its Wall communizfcham rs and said explosion chamber inlet, and a V.valved air connection between said openingljand -the u per portion j of the. .ex- P.

'f-Ntlie'4 feed A'cli'fannel of anexplosion chamber, of 'ai valve Afor ntrolling the same, comprising 'tjout portion and uponits opth an opening communicating cut out portion.

. y 'ngine, a casing comprising an explosion chamber anda larger compression chamber, llow piston arrangedwithin "saidexp'l portion disposed to operatewithin lsaid com'- l pression chamber, a crank-case connectedto 'portiorij4 disposed' to .operate Vwithin said chambers, air connec.

'ressing chamber, said 'casing being jpro atinebetween'one of said air compressing osifonj chamber, w ereby'to inject air ito said 'explosion' *chamber each time thef-p're'se -F 3. In 'lfgas'en ine, the combination with l n. provided upon-'one side theref y compression chamber. `and closed crankfcase, outl'portlon and @sect1-0n of@ exhaust port* and said last n'chamber and havinga flanged said casing and communicating with said compression chamber, a jacketsurrounding saidexplosion chamber and provided with angair inlet, means of communication. between said jacket and said compression 60 chamber, means of communication'betw'een' said jacket and said crank-case, said explosion chamber being-provided with inlet and vexhaust ports, means of communication bevchamber, 'a hollow piston' .arranged Within said explosion chamber and havinga anged 7 5 compression chamber, acrank-case connected to .said casing and communicating with said lcompression chamber, a Jacket Asurrounding I said explosionchamber and provided with an air inlet, 'means o f', communication between said 'Jacket *and said compression chamber,- means of'v communication vbetween said v.jacket and said crank case', said, ex-

pl'osio c liambe'rihavi inlet and exhaust ports, means of communication between said compression chamber;-and said inlet ort,v means of communi'cationbetween `said 1nlet. port land the upper-'portion of said explosion chamber, adevice for supplying materialgto said inlet port, and means fof communi'cm- 1 90.

said devicl' y 6'.- In a gasengir'i'e, an explosion chamber, a compression chamber, 'a closed crank-case, a piston disposed' within :said vvexplosion 1chamber and having a'fianged portion dis. 1

tion between-said l inpressiori chamber .v

posed withinsa'id compression-chamber, saidV explosion .chamber being provided with-inletf'" and exhaust" ports', an oil-tank, 'means of 100v communications: between said oilrtank and and means of 'communication between saidnamed -means of` In testimony whereof 'I aliix my. signature .105 in'presence oftwo witiiefs'ses .j 'CHARLES-M.. LEECH.

-Wtnessem l W. L. Retiens JoIiiNl A. Morin. 

